Do you offer free samples?

We could offer free samples for your reference,you just need to pay the shipping cost.

What is the warranty policy for rejected products?

Replacement at all our cost for rejected products if the part does not match with the PO drawings.

Carbon Steel Grade 8.8 Carriage Bolt Black (DIN603)

Name: Carbon Steel Grade 8.8 Carriage Bolt Black (DIN603)
Brand: Shenzhen Conghui Precision Hardware Co., Ltd.
SKU: 723482012

Guangdong, ChinaShenzhen Conghui Precision Hardware Co., Ltd.

US$0.01-0.20

100 Pieces

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

CH-C0001

Connection

Common Bolt

Head Style

Square

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

8.8

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black

Bolt Type

Coach Bolt,Carriage Bolt,Square Neck Bolt

Certificate

ISO9001:2008, SGS Testing Report & RoHS

OEM

Available

MOQ

100PCS

Product Name

Carbon Steel Grade 8.8 Carriage Bolt Black DIN603

Transport Package

General Export Package

Specification

M4-M20

Trademark

CONGHUI

Origin

Guangdong, China

HS Code

7318130000

Production Capacity

1000000PCS/Week

Key features

Diverse Material Options: Available in Stainless Steel, Carbon Steel, Titanium, Aluminum, and Brass.

Wide Size Range: Sizes from M4 to M20 available, or customized as per request.

Multiple Head Styles: Options include Flat, Round, Oval, Button, Fillister, and various Hex types.

Comprehensive Finishing: Offers Zn-plated, Ni-plated, Black Oxide, Anodize, and many other finishes.

Fast Delivery: Standard delivery 7-15 days after confirmation, with urgent options available.

Free Samples: Free samples provided for specification check; customer pays shipping only.

Quality Guarantee: Free replacement for rejected products if parts do not match PO drawings.

OEM Services: OEM available with ISO9001:2008, SGS, and RoHS certifications.

Company profile

Shenzhen Conghui Precision Hardware Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤2.75h

AI-Powered supplier vetting

SummaryShenzhen Conghui Precision Hardware Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory, supplying fasteners, hardware, and tools. It demonstrates broad customization and ODM capabilities, reports new products within the past year, and provides OEM services for well-known brands. Service processes for corrective actions and customer complaints are documented and supported by records, while supplier-service qualification procedures exist but lack records. Production-related evidence is mixed: reported lead time is within 15 working days in both peak and off-season, but no in-stock, overseas warehouse, overseas branch/agent, or overseas showroom capability is reported. Financial period information is present for three years, but no financial performance details are provided. Audit information identifies TÜV Rheinland, although the audit result is recorded as 0 and the report validity ended on 2025-02-23. Raw-material traceability, quality assurance...

Supplier typeThe supplier is identified as both a trading company and manufacturer/factory, with limited-company ownership and a business scope covering molds, bicycle accessories, forged and stamped parts, auto and motorcycle parts, and hardware products. Its stated product scope is fasteners, hardware, and tools, indicating a supplier with both manufacturing and trading characteristics.

After-Sales capabilityThe supplier has clear procedures and followed records for corrective and preventive actions and customer complaints. It accepts multiple service quotation and payment terms, but has no overseas agents or branches, no overseas showroom, no overseas warehouse, and reports service coverage in 0 countries, limiting evidence of international after-sales reach.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and offers multiple design-development options. It does not have an available SDK, but the evidence supports product and design innovation capability for physical products.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, directly supporting a broad customization capability.

Client casesThe supplier reports providing OEM services for well-known brands, which is direct evidence of at least one type of customer engagement. However, no customer names, project details, volumes, or independently verifiable case records are provided, so the breadth and strength of its customer case history cannot be fully assessed.

Product Q&A

Q:Are you a Trading company or a Manufacturer?

We are an Industry&Trade Company .

Q:What's your product range?

Our product range includes screws, nuts, knobs, bolts, washers, rivet, anchor and CNC parts. We strictly implement various quality standards like GB, ISO, DIN, JIS, AISI NFE and BSW.Non-standard products also accepted.

Q:Why should I choose you? What's your advantages? Industries you are serving?

We are a professional manufacturer and have 9 years production and management experience in the field of fasteners . We can provide our customers with a good solution in the area of production design, production process,packaging and after-sale service.Customer satisfaction is our sole pursuit.

Q:Which industry field are your product is suitable used in ?

Our products are widely use in machine assembling, electronics, constructional engineering furniture cabinets, etc.

Q:What is the delivery time?

About 7 -15 days after all details confirmed and able to offering fast delivery for urgent order.